Machine for sawing staves



(No Model.) 3 Sheets-Sheet 1.

O. R. PENFIELD.

MACHINE FOR SAWING STAVES.

No. 396,763. Patented Jan. 29, 1889.

(No Model.) 3 Sheets-Sheet 2.

- O. R. PENFIELD.

MACHINE FOR SAWING STAVES.

No. 396,763. Patented Jan. 29, 1889.

3 Sheets-Sheet 3.

(No Model.)

0. R. PENPIELD.

MACHINE FOR SAWING STAVES.

No. 396,763. PatentedJan. 29, 1889.

show the interior construction.

UNITED STATES PATENT OrEicE.

CHARLES R. PENFIELD, OF ROCHESTER, NEW YORK.

MACHINE FOR SAWING STAVES.

SPECIFICATION forming part of Letters Patent No. 896,763, dated January29, 1889.

Application filed October 13, 1887. $erial No. 252,270. (No model.)

To all whom it may concern.-

Be it known that 1, CHARLES R. PENEIELD, of Rochester, in the county ofMonroe and State of New York, have invented a certain new and usefulImprovement in Machines for Sawing Staves; and I do hereby declare thatthe following is a full, clear, and exact description of the same,reference being had to the drawings accoinpai'lying this application.

My improvement relates to that class of stave-sawing machines in which agang of saws is used, and the plank from which the staves are made issawed up at one operation.

The invention consists in the construction and arrangement of partshereinafter more fully described and definitely claimed.

In the drawings, Figure 1. is a plan view of the machine, portions beingbroken away to Fig. is a side elevation of the same. Fig. 3 is a planview similar to Fig. 1, but with the saw-table removed. Fig. a is a planview of the iron frame to which the follower or pusher is attached. Fig.5 is a cross-section in line a .00 of Fig. 3. Fig.6 is a cross-sectionin line y y of Fig 3.

A indicates the frame of the n1achine,which may be of any desiredconstruction.

B is the table or bed on top of the frame, on which the plank is laid tobe carried to the saws.

O C are the saws, located on a shaft, I), having at one end abalance-wheel,

F is a follower or pusher moving forward and back on the table andserving to push the plank forward to the saws.

G G are endless drive-chains to which the follower is attached.

H H are sprocket-wheels around which the drive chains pass and by whichthey are driven.

I is a metallic spider or frame to which the follower is bolted.

.I is an arm forming an evener, pivoted at a to the spider I andattached at the ends to the drive-chains G G. By this means easy actionis given to the follower, as the play of the evener will compensate forany unequal action of the chains and prevent the follower from binding.

The driving mechanism may be of any dein place by a set-screw.

sired kind. In the drawings a hand, b, e:& tends from the driving-shaftD to a pulley, c, on a shaft, K. On shaft K are two other pul leys, d f,having bands g h, that extend to pulleys i k, running loosely on ashaft, L. The band 9 is crossed, while the band h is uncrossed. It willbe seen that the pulleys 1' 75 will run in opposite directions on theshaft L.

j is a sliding clutch resting on shaft L between the pulleys 2'70, andprovided with teeth Z, that engage with corresponding teeth, 6, on thehubs of the pulleys, accordingly as the clutch is shifted from one sideto the other to engage therewith. hen the clutch stands centrally, it isout of gear with both pulleys.

M is a lever for operating the clutch, said lever being pivoted at m andthe long arm extending around to the rear end of the machine, as shownin Figs. 1 and N N are two ro :ls jointed to the long arm of the lever Mat n a, said rods extending longitudinally of the machine under thetable B. The inner end of rod N rests loosely in a socket in one of thecross-bars A of the frame, so as to slide easily forward and back, andsaid rod is provided with adjustable stops 0 0 Fig. 3, between whichplays a vertical arm, 19, attached to and depending from the bottom ofthe follower F. The other rod, N, passes through a hole in aswivel-head, q, and is held The swivel is pivoted in a crank-shapedweighted shifter, 0, arranged to turn in a socket in one of the sidepieces of the frame. On the outer side of the shifter O is a handle, 7",by which it can be operated by hand.

3, Fig. 2, is a pinion on shaft L, that engages with a spur-wheel, t, onthe shaft I, that carries the rear sprocket-wheels, H H.

The operation is as follows: Motion imparted to band-wheel Q istransferred to the pulleys t'kthrough the medium of the several bands I)g h. This causes the two loose pulleys i k to revolve in oppositedirections, as before stated. The clutch j being in engagement with thewheel 70, as shown in the drawings, it gives motion to pinion s, and thelatter to spur-wheel t, which consequently gives motion to the rearsprocket-wheels, H II, that carry the chains G G. This causes thefollower F to move forward on the table D, pushing the plank in advanceup to and entirely through the gang of saws, where it is cut up intostaves all at one operation. 'hen the follower reaches the end of itsforward stroke, the arm 1), attached to the bottom of the follower,strikes the stop and throws the rods N N forward and tilts the weightedshifter 0, so that it falls over in front, carrying the rods N N withit. The rods draw on the lever l\[ sufficiently to throw the clutch jover from the hub of pulley 7a to the hub of pulley i, consequentlychanging the motion of the follower F and causin it to move backward toreceive another plank. As the follower goes back, the arm 1) strikes therear stop, 0, which throws the rods N N and disen gages the clutch frompulley i. The shifter 0, however, instead of being thrown over at therear is simply raised to a vertical position, as indicated by the fulllines, Fig. 9. Consequently the clutch is not engaged again with pulley7r, but stands centrally between the two pulleys and out of gear, andthe follower is stopped. This gives time to insert the n ext plank infront of the follower. To start the follower again, the operator seizesthe handle 9' and throws the stirrup over back, which ei'igages theclutch with pulley 7tand starts the machine again. The underside of thefollower is cut with kerfs or grooves corresponding with the saws, sothat it will pass over the saws and push the plank entirely through andpush staves clear, leaving the spaces between the saws entirely clear ofthe staves, by which means each stave is cut eutirely free and passesoff in front, and the pieces will not fly up nor be caught by the sawsand thrown back, as in ordinary machines. A plate, 11, is used over thesaws, provided with slits through which the saws pass.

The front portion, 13, of the saw-table is hinged at "r, so that it canbe thrown up clear of the saws, as indicated by the dotted lines at theleft in Fig. 2.

R is a presser pivoted at w to adjustable standards .2 .2, attached tothe frame. It consists of a block which bears on top of thestaves overthe saws and prevents them from springing up or riding the saws as theypass through. The inner end of the presser is beveled, as shown at as,so that when the plank strikes it the presser rides up over the plank,as indicated by the dotted lines, Fig. 2.

S is a fixed gage consisting of a bar on the back side of the table. Theedge of the plank runs against this gage in going forward to the saws.

T is an adjustable supplementary gage for guiding narrow pieces where itis not necessary to use the whole gang of saws. It consists of across-head, (1 having arms a a, pivoted to the back of the table, sothat the frame can turn up and down, and a face-plate,

b which constitutes the gage proper, provided with stems 0 0 that passthrough the cross-head a and are secured by set-screws. By this meansthe supplementary gage can be moved in and out to adapt it to thedifferent widths of the stuff to be cut, and also can rise vertically toallow passage of the follower under it. The inner end of the plate 5 isbeveled, as shown at 71", so that when the end of the follower strikesit the gage will be lifted up, as indicated by dotted lines, Fig. 2, andthe follower will pass under it. By moving the face-plate out or in itis adapted to pieces of plank of varying width less than the whole widthof the gang of saws, and therefore the work will be brought on the sidenext to the operator, where the work is more easily done and lesseningthe wear on the rear saws.

V a hollow sleeve or arbor fitted on the main shaft 1), the saws beingfitted on said arbor and separated by washers or rings d (P, which alsoslip on said arbor, as shown in Fig. (3. In said figure only portions ofthe saws are shown in place. At one end the arbor has a head, f providedwith sockets 9 in which rest corresponding pins, 702, of a head, j onthe shaft D. At the opposite end a cap, i screws on the end of thearbor, and outside of this a nut, K screws on the end of the shaft tohold the arbor in place. The arbor is provided with a spline and thesaws and washers with slots fitting the same, by which means the partsare locked together.

The machine above described will do very rapid work, as a whole plank ofstave length is sawed into staves at one operation, and one blockfollows another at intervals, the feed being intermittent.

ll avin g described my invention, whatl claim as new, and desire to secure by Letters Patent, 1s

1. In a machine for sawing staves, the combination, with a gang of saws,of a follower constructed to run over the saws forward and back, chainswith which the follower is con nected, and an. evener, J, pivoted to thefollower and attached to the chains, as herein shown and described.

2. In a machine for sawing staves, the combination of the table B, agang of saws, O C, at one end of the table, a follower, F, resting onthe table and arranged to run over the saws, chains G G, to which thefollower is at tached, a pivoted rock-lever, M, carrying at one end aclutch, j, which shifts from one to the other of the pulleys i I; toreverse the motion, the rods N N, attached to said lever, the rod Nbeing provided with adjustable stops 0 0, for limiting the throw of thefollower, and the weighted shifter 0, provided with a swivel-head, q,through which the rod N passes, as shown and described, and for thepurpose specified.

3. In a machine for sawing staves, the combination of' the table B, agang of saws, C C, at one end of the table, a follower, F, resting onthe table and arranged to run over the saws, chains G G, to which thefollower is attached, arranged to reciprocate forward and back, apresser, R, pivoted back of the saws and in longitudinal line with themotion of the follower, and a gage, T, provided with an adjustableface-plate, 19 located between the pre sser and follower and pivoted toturn transversely of the machine, said presser and gage being beveled atthe ends next the follower, as shown and described, and for The purposespecified.

In witness whereof I have hereunto signed my name in the presence of twosubscribing 10 witnesses.

CHAS. R. PENFIELD.

itnesses:

WM. J. MOPHERSON, R. F. OSGOOD.

